We can hardly think of an electronic device without a battery, unless it runs on a mains power supply. And even then it might have a bios button battery to power its startup memory. Battery design is still evolving because no battery is perfect. We discuss the different types of batteries we encounter today.
Types of Metals in Batteries in Downtown Stores
All types of batteries in common use have metals in their cathodes. These are the active core of the power they deliver. Metals in regular use include cadmium, lead, zinc, manganese, nickel, silver, mercury and lithium.
It is important to note that all these metals we take from the earth can damage the environment that supports us. We should therefore ensure that all our spent batteries go to a recycling depot for proper processing, and not into the trash.
Primary Batteries That Are Not Rechargeable
Single-use batteries include zinc carbon, zinc-chloride, alkaline, button cell, and lithium varieties:
- Zinc-carbon batteries are general purpose. They run flat relatively quickly when used continuously.
- Zinc-Chloride cells last longer than zinc-carbon types. Look for the label ‘heavy’ or ‘super heavy duty’.
- Alkaline batteries may last five-times longer than zinc-carbon alternatives but they cost noticeably more.
- Button cell batteries use a variety of chemistries. Make sure small children do not swallow them!
- Lithium batteries are twice as powerful as alkaline versions. Treat them with care when disposing them.
Main Types of Rechargeable Batteries
Popular rechargeable batteries include nickel-cadmium, sealed lead-acid, nickel-metal-hydride, and lithium-ion:
- Nickel-cadmium batteries are integral in appliances or supplied separately. They are far more powerful than alkaline.
- Sealed lead-acid batteries are less expensive than other alternatives but are heavy and bulky.
- Nickel-metal-hydride have low drain and high energy capacity. They are suitable for computers and cellphones.
- Lithium-ion batteries are lightweight with high energy density. They may become unstable and overheat.
You get what you pay for in our world of batteries. Choose the type that suits you best, and treat them with care. Make sure they are from a supplier you trust who honors their product warranty. Recycle spent batteries responsibly.
More Information
Four Types of Batteries in Our Stores
